Question

3 1/4 x - 7/6 x = -5/12 + 12/3 

lưu ý : VD: 0  0/0 là hỗn số nha

Answer 1

\(3\frac{1}{4}x-\frac{7}{6}x=\frac{-5}{12}+\frac{12}{3}\)

= \(\frac{13}{4}x-\frac{7}{6}x=\frac{-5}{12}+\frac{12}{3}\)

= \(x.\left(\frac{13}{4}-\frac{7}{6}\right)=\frac{43}{12}\)

= \(x.\frac{25}{12}=\frac{45}{12}\)

\(x=\frac{45}{12}:\frac{25}{12}\)

\(x=\frac{9}{5}\)

Answer 2

\(3\frac{1}{4}x-\frac{7}{6}x=-\frac{5}{12}+\frac{12}{3}\)

\(\frac{13}{4}x-\frac{7}{6}x=-\frac{5}{12}+\frac{48}{12}\)

\(\left(\frac{13}{4}-\frac{7}{6}\right)x=\frac{43}{12}\)

\(\frac{25}{12}x=\frac{43}{12}\)

\(x=\frac{43}{25}\)

Answer 3

\(3\frac{1}{4}x-\frac{7}{6}x=\frac{-5}{12}+\frac{12}{3}\)

\(\Rightarrow\frac{13}{4}x-\frac{7}{6}x=\frac{43}{12}\)

\(\Rightarrow\frac{25}{12}x=\frac{43}{12}\)

\(\Rightarrow x=\frac{43}{12}\div\frac{25}{12}\)

\(\Rightarrow x=\frac{43}{25}\)

Vậy \(x=\frac{43}{25}\)